FR844452A - Aerial and submarine sounding apparatus using the so-called echo method - Google Patents

Aerial and submarine sounding apparatus using the so-called echo method

Info

Publication number
FR844452A
FR844452A FR844452DA FR844452A FR 844452 A FR844452 A FR 844452A FR 844452D A FR844452D A FR 844452DA FR 844452 A FR844452 A FR 844452A
Authority
FR
France
Prior art keywords
aerial
echo method
sounding apparatus
called echo
submarine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
David Szyja Glazer
Roger Marie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR844452A publication Critical patent/FR844452A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
FR844452D 1938-04-05 1938-04-05 Aerial and submarine sounding apparatus using the so-called echo method Expired FR844452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR844452T 1938-04-05

Publications (1)

Publication Number Publication Date
FR844452A true FR844452A (en) 1939-07-26

Family

ID=9312413

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844452D Expired FR844452A (en) 1938-04-05 1938-04-05 Aerial and submarine sounding apparatus using the so-called echo method

Country Status (1)

Country Link
FR (1) FR844452A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473971A (en) * 1944-02-25 1949-06-21 Donald E Ross Underwater transducer
US2496060A (en) * 1944-08-29 1950-01-31 Rca Corp Submarine signaling device covered with waterproof vibration damping shield

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473971A (en) * 1944-02-25 1949-06-21 Donald E Ross Underwater transducer
US2496060A (en) * 1944-08-29 1950-01-31 Rca Corp Submarine signaling device covered with waterproof vibration damping shield

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